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Theorem coe1tmmul2 22622
Description: Coefficient vector of a polynomial multiplied on the right by a term. (Contributed by Stefan O'Rear, 27-Mar-2015.)
Hypotheses
Ref Expression
coe1tm.z 0 = (0g‘𝑅)
coe1tm.k 𝐾 = (Base‘𝑅)
coe1tm.p 𝑃 = (Poly1‘𝑅)
coe1tm.x 𝑋 = (var1‘𝑅)
coe1tm.m · = ( ·𝑠 ‘𝑃)
coe1tm.n 𝑁 = (mulGrp‘𝑃)
coe1tm.e ↑ = (.g‘𝑁)
coe1tmmul.b 𝐵 = (Base‘𝑃)
coe1tmmul.t ∙ = (.r‘𝑃)
coe1tmmul.u × = (.r‘𝑅)
coe1tmmul.a (𝜑 → 𝐴 ∈ 𝐵)
coe1tmmul.r (𝜑 → 𝑅 ∈ Ring)
coe1tmmul.c (𝜑 → 𝐶 ∈ 𝐾)
coe1tmmul.d (𝜑 → 𝐷 ∈ ℕ0)
Assertion
Ref Expression
coe1tmmul2 (𝜑 → (coe1‘(𝐴 ∙ (𝐶 · (𝐷 ↑ 𝑋)))) = (𝑥 ∈ ℕ0 ↦ if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 )))
Distinct variable groups:   𝑥, 0   𝑥,𝐶   𝑥,𝐷   𝑥,𝐾   𝑥, ↑   𝑥,𝐴   𝑥,𝑁   𝑥,𝑃   𝑥,𝑋   𝜑,𝑥   𝑥,𝑅   𝑥, ·   𝑥, ×   𝑥, ∙
Allowed substitution hint:   𝐵(𝑥)

Proof of Theorem coe1tmmul2
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 coe1tmmul.r . . 3 (𝜑 → 𝑅 ∈ Ring)
2 coe1tmmul.a . . 3 (𝜑 → 𝐴 ∈ 𝐵)
3 coe1tmmul.c . . . 4 (𝜑 → 𝐶 ∈ 𝐾)
4 coe1tmmul.d . . . 4 (𝜑 → 𝐷 ∈ ℕ0)
5 coe1tm.k . . . . 5 𝐾 = (Base‘𝑅)
6 coe1tm.p . . . . 5 𝑃 = (Poly1‘𝑅)
7 coe1tm.x . . . . 5 𝑋 = (var1‘𝑅)
8 coe1tm.m . . . . 5 · = ( ·𝑠 ‘𝑃)
9 coe1tm.n . . . . 5 𝑁 = (mulGrp‘𝑃)
10 coe1tm.e . . . . 5 ↑ = (.g‘𝑁)
11 coe1tmmul.b . . . . 5 𝐵 = (Base‘𝑃)
125, 6, 7, 8, 9, 10, 11ply1tmcl 22618 . . . 4 ((𝑅 ∈ Ring ∧ 𝐶 ∈ 𝐾 ∧ 𝐷 ∈ ℕ0) → (𝐶 · (𝐷 ↑ 𝑋)) ∈ 𝐵)
131, 3, 4, 12syl3anc 1399 . . 3 (𝜑 → (𝐶 · (𝐷 ↑ 𝑋)) ∈ 𝐵)
14 coe1tmmul.t . . . 4 ∙ = (.r‘𝑃)
15 coe1tmmul.u . . . 4 × = (.r‘𝑅)
166, 14, 15, 11coe1mul 22616 . . 3 ((𝑅 ∈ Ring ∧ 𝐴 ∈ 𝐵 ∧ (𝐶 · (𝐷 ↑ 𝑋)) ∈ 𝐵) → (coe1‘(𝐴 ∙ (𝐶 · (𝐷 ↑ 𝑋)))) = (𝑥 ∈ ℕ0 ↦ (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)))))))
171, 2, 13, 16syl3anc 1399 . 2 (𝜑 → (coe1‘(𝐴 ∙ (𝐶 · (𝐷 ↑ 𝑋)))) = (𝑥 ∈ ℕ0 ↦ (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)))))))
18 eqeq2 2775 . . . 4 ((((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶) = if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 ) → ((𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶) ↔ (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 )))
19 eqeq2 2775 . . . 4 ( 0 = if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 ) → ((𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = 0 ↔ (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 )))
20 coe1tm.z . . . . . . 7 0 = (0g‘𝑅)
211adantr 486 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝑅 ∈ Ring)
22 ringmnd 20497 . . . . . . . 8 (𝑅 ∈ Ring → 𝑅 ∈ Mnd)
2321, 22syl 18 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝑅 ∈ Mnd)
24 ovex 7473 . . . . . . . 8 (0...𝑥) ∈ V
2524a1i 11 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (0...𝑥) ∈ V)
26 simprr 785 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝐷 ≤ 𝑥)
274adantr 486 . . . . . . . . . 10 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝐷 ∈ ℕ0)
28 simprl 783 . . . . . . . . . 10 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝑥 ∈ ℕ0)
29 nn0sub 12680 . . . . . . . . . 10 ((𝐷 ∈ ℕ0 ∧ 𝑥 ∈ ℕ0) → (𝐷 ≤ 𝑥 ↔ (𝑥 − 𝐷) ∈ ℕ0))
3027, 28, 29syl2anc 596 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝐷 ≤ 𝑥 ↔ (𝑥 − 𝐷) ∈ ℕ0))
3126, 30mpbid 235 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝑥 − 𝐷) ∈ ℕ0)
3227nn0ge0d 12694 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 0 ≤ 𝐷)
33 nn0re 12639 . . . . . . . . . . 11 (𝑥 ∈ ℕ0 → 𝑥 ∈ ℝ)
3433ad2antrl 741 . . . . . . . . . 10 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝑥 ∈ ℝ)
354nn0red 12692 . . . . . . . . . . 11 (𝜑 → 𝐷 ∈ ℝ)
3635adantr 486 . . . . . . . . . 10 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝐷 ∈ ℝ)
3734, 36subge02d 11932 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (0 ≤ 𝐷 ↔ (𝑥 − 𝐷) ≤ 𝑥))
3832, 37mpbid 235 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝑥 − 𝐷) ≤ 𝑥)
39 fznn0 13777 . . . . . . . . 9 (𝑥 ∈ ℕ0 → ((𝑥 − 𝐷) ∈ (0...𝑥) ↔ ((𝑥 − 𝐷) ∈ ℕ0 ∧ (𝑥 − 𝐷) ≤ 𝑥)))
4039ad2antrl 741 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → ((𝑥 − 𝐷) ∈ (0...𝑥) ↔ ((𝑥 − 𝐷) ∈ ℕ0 ∧ (𝑥 − 𝐷) ≤ 𝑥)))
4131, 38, 40mpbir2and 726 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝑥 − 𝐷) ∈ (0...𝑥))
421ad2antrr 739 . . . . . . . . 9 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → 𝑅 ∈ Ring)
43 eqid 2763 . . . . . . . . . . . . 13 (coe1‘𝐴) = (coe1‘𝐴)
4443, 11, 6, 5coe1f 22556 . . . . . . . . . . . 12 (𝐴 ∈ 𝐵 → (coe1‘𝐴):ℕ0⟶𝐾)
452, 44syl 18 . . . . . . . . . . 11 (𝜑 → (coe1‘𝐴):ℕ0⟶𝐾)
4645ad2antrr 739 . . . . . . . . . 10 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (coe1‘𝐴):ℕ0⟶𝐾)
47 elfznn0 13778 . . . . . . . . . . 11 (𝑦 ∈ (0...𝑥) → 𝑦 ∈ ℕ0)
4847adantl 487 . . . . . . . . . 10 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → 𝑦 ∈ ℕ0)
4946, 48ffvelcdmd 7106 . . . . . . . . 9 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → ((coe1‘𝐴)‘𝑦) ∈ 𝐾)
50 eqid 2763 . . . . . . . . . . . . 13 (coe1‘(𝐶 · (𝐷 ↑ 𝑋))) = (coe1‘(𝐶 · (𝐷 ↑ 𝑋)))
5150, 11, 6, 5coe1f 22556 . . . . . . . . . . . 12 ((𝐶 · (𝐷 ↑ 𝑋)) ∈ 𝐵 → (coe1‘(𝐶 · (𝐷 ↑ 𝑋))):ℕ0⟶𝐾)
5213, 51syl 18 . . . . . . . . . . 11 (𝜑 → (coe1‘(𝐶 · (𝐷 ↑ 𝑋))):ℕ0⟶𝐾)
5352ad2antrr 739 . . . . . . . . . 10 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (coe1‘(𝐶 · (𝐷 ↑ 𝑋))):ℕ0⟶𝐾)
54 fznn0sub 13714 . . . . . . . . . . 11 (𝑦 ∈ (0...𝑥) → (𝑥 − 𝑦) ∈ ℕ0)
5554adantl 487 . . . . . . . . . 10 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (𝑥 − 𝑦) ∈ ℕ0)
5653, 55ffvelcdmd 7106 . . . . . . . . 9 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)) ∈ 𝐾)
575, 15ringcl 20504 . . . . . . . . 9 ((𝑅 ∈ Ring ∧ ((coe1‘𝐴)‘𝑦) ∈ 𝐾 ∧ ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)) ∈ 𝐾) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) ∈ 𝐾)
5842, 49, 56, 57syl3anc 1399 . . . . . . . 8 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) ∈ 𝐾)
5958fmpttd 7136 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)))):(0...𝑥)⟶𝐾)
601ad2antrr 739 . . . . . . . . . . 11 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → 𝑅 ∈ Ring)
613ad2antrr 739 . . . . . . . . . . 11 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → 𝐶 ∈ 𝐾)
624ad2antrr 739 . . . . . . . . . . 11 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → 𝐷 ∈ ℕ0)
63 eldifi 4070 . . . . . . . . . . . . 13 (𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)}) → 𝑦 ∈ (0...𝑥))
6463, 54syl 18 . . . . . . . . . . . 12 (𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)}) → (𝑥 − 𝑦) ∈ ℕ0)
6564adantl 487 . . . . . . . . . . 11 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → (𝑥 − 𝑦) ∈ ℕ0)
66 eldifsn 4748 . . . . . . . . . . . 12 (𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)}) ↔ (𝑦 ∈ (0...𝑥) ∧ 𝑦 ≠ (𝑥 − 𝐷)))
67 simplrl 789 . . . . . . . . . . . . . . . . . 18 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → 𝑥 ∈ ℕ0)
6867nn0cnd 12693 . . . . . . . . . . . . . . . . 17 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → 𝑥 ∈ ℂ)
6947nn0cnd 12693 . . . . . . . . . . . . . . . . . 18 (𝑦 ∈ (0...𝑥) → 𝑦 ∈ ℂ)
7069adantl 487 . . . . . . . . . . . . . . . . 17 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → 𝑦 ∈ ℂ)
7168, 70nncand 11698 . . . . . . . . . . . . . . . 16 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (𝑥 − (𝑥 − 𝑦)) = 𝑦)
7271eqcomd 2769 . . . . . . . . . . . . . . 15 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → 𝑦 = (𝑥 − (𝑥 − 𝑦)))
73 oveq2 7448 . . . . . . . . . . . . . . . 16 (𝐷 = (𝑥 − 𝑦) → (𝑥 − 𝐷) = (𝑥 − (𝑥 − 𝑦)))
7473eqeq2d 2774 . . . . . . . . . . . . . . 15 (𝐷 = (𝑥 − 𝑦) → (𝑦 = (𝑥 − 𝐷) ↔ 𝑦 = (𝑥 − (𝑥 − 𝑦))))
7572, 74syl5ibrcom 250 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (𝐷 = (𝑥 − 𝑦) → 𝑦 = (𝑥 − 𝐷)))
7675necon3d 2980 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (𝑦 ≠ (𝑥 − 𝐷) → 𝐷 ≠ (𝑥 − 𝑦)))
7776impr 460 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ (𝑦 ∈ (0...𝑥) ∧ 𝑦 ≠ (𝑥 − 𝐷))) → 𝐷 ≠ (𝑥 − 𝑦))
7866, 77sylan2b 606 . . . . . . . . . . 11 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → 𝐷 ≠ (𝑥 − 𝑦))
7920, 5, 6, 7, 8, 9, 10, 60, 61, 62, 65, 78coe1tmfv2 22621 . . . . . . . . . 10 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)) = 0 )
8079oveq2d 7456 . . . . . . . . 9 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) = (((coe1‘𝐴)‘𝑦) × 0 ))
815, 15, 20ringrz 20552 . . . . . . . . . . 11 ((𝑅 ∈ Ring ∧ ((coe1‘𝐴)‘𝑦) ∈ 𝐾) → (((coe1‘𝐴)‘𝑦) × 0 ) = 0 )
8242, 49, 81syl2anc 596 . . . . . . . . . 10 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ (0...𝑥)) → (((coe1‘𝐴)‘𝑦) × 0 ) = 0 )
8363, 82sylan2 605 . . . . . . . . 9 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → (((coe1‘𝐴)‘𝑦) × 0 ) = 0 )
8480, 83eqtrd 2798 . . . . . . . 8 (((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) ∧ 𝑦 ∈ ((0...𝑥) ∖ {(𝑥 − 𝐷)})) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) = 0 )
8584, 25suppss2 8242 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → ((𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)))) supp 0 ) ⊆ {(𝑥 − 𝐷)})
865, 20, 23, 25, 41, 59, 85gsumpt 20203 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = ((𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))‘(𝑥 − 𝐷)))
87 fveq2 6905 . . . . . . . . 9 (𝑦 = (𝑥 − 𝐷) → ((coe1‘𝐴)‘𝑦) = ((coe1‘𝐴)‘(𝑥 − 𝐷)))
88 oveq2 7448 . . . . . . . . . 10 (𝑦 = (𝑥 − 𝐷) → (𝑥 − 𝑦) = (𝑥 − (𝑥 − 𝐷)))
8988fveq2d 6909 . . . . . . . . 9 (𝑦 = (𝑥 − 𝐷) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)) = ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷))))
9087, 89oveq12d 7458 . . . . . . . 8 (𝑦 = (𝑥 − 𝐷) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) = (((coe1‘𝐴)‘(𝑥 − 𝐷)) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷)))))
91 eqid 2763 . . . . . . . 8 (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)))) = (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))
92 ovex 7473 . . . . . . . 8 (((coe1‘𝐴)‘(𝑥 − 𝐷)) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷)))) ∈ V
9390, 91, 92fvmpt 7013 . . . . . . 7 ((𝑥 − 𝐷) ∈ (0...𝑥) → ((𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))‘(𝑥 − 𝐷)) = (((coe1‘𝐴)‘(𝑥 − 𝐷)) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷)))))
9441, 93syl 18 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → ((𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))‘(𝑥 − 𝐷)) = (((coe1‘𝐴)‘(𝑥 − 𝐷)) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷)))))
9528nn0cnd 12693 . . . . . . . . . 10 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝑥 ∈ ℂ)
9627nn0cnd 12693 . . . . . . . . . 10 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝐷 ∈ ℂ)
9795, 96nncand 11698 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝑥 − (𝑥 − 𝐷)) = 𝐷)
9897fveq2d 6909 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷))) = ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘𝐷))
993adantr 486 . . . . . . . . 9 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → 𝐶 ∈ 𝐾)
10020, 5, 6, 7, 8, 9, 10coe1tmfv1 22620 . . . . . . . . 9 ((𝑅 ∈ Ring ∧ 𝐶 ∈ 𝐾 ∧ 𝐷 ∈ ℕ0) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘𝐷) = 𝐶)
10121, 99, 27, 100syl3anc 1399 . . . . . . . 8 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘𝐷) = 𝐶)
10298, 101eqtrd 2798 . . . . . . 7 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷))) = 𝐶)
103102oveq2d 7456 . . . . . 6 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (((coe1‘𝐴)‘(𝑥 − 𝐷)) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − (𝑥 − 𝐷)))) = (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶))
10486, 94, 1033eqtrd 2802 . . . . 5 ((𝜑 ∧ (𝑥 ∈ ℕ0 ∧ 𝐷 ≤ 𝑥)) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶))
105104anassrs 473 . . . 4 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ 𝐷 ≤ 𝑥) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶))
1061ad2antrr 739 . . . . . . . . . . 11 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝑅 ∈ Ring)
1073ad2antrr 739 . . . . . . . . . . 11 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝐶 ∈ 𝐾)
1084ad2antrr 739 . . . . . . . . . . 11 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝐷 ∈ ℕ0)
10954ad2antll 742 . . . . . . . . . . 11 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (𝑥 − 𝑦) ∈ ℕ0)
11054nn0red 12692 . . . . . . . . . . . . 13 (𝑦 ∈ (0...𝑥) → (𝑥 − 𝑦) ∈ ℝ)
111110ad2antll 742 . . . . . . . . . . . 12 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (𝑥 − 𝑦) ∈ ℝ)
11233ad2antlr 740 . . . . . . . . . . . . 13 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝑥 ∈ ℝ)
11335ad2antrr 739 . . . . . . . . . . . . 13 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝐷 ∈ ℝ)
11447ad2antll 742 . . . . . . . . . . . . . . 15 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝑦 ∈ ℕ0)
115114nn0ge0d 12694 . . . . . . . . . . . . . 14 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 0 ≤ 𝑦)
11647nn0red 12692 . . . . . . . . . . . . . . . 16 (𝑦 ∈ (0...𝑥) → 𝑦 ∈ ℝ)
117116ad2antll 742 . . . . . . . . . . . . . . 15 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝑦 ∈ ℝ)
118112, 117subge02d 11932 . . . . . . . . . . . . . 14 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (0 ≤ 𝑦 ↔ (𝑥 − 𝑦) ≤ 𝑥))
119115, 118mpbid 235 . . . . . . . . . . . . 13 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (𝑥 − 𝑦) ≤ 𝑥)
120 simprl 783 . . . . . . . . . . . . . 14 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → ¬ 𝐷 ≤ 𝑥)
121112, 113ltnled 11481 . . . . . . . . . . . . . 14 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (𝑥 < 𝐷 ↔ ¬ 𝐷 ≤ 𝑥))
122120, 121mpbird 260 . . . . . . . . . . . . 13 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝑥 < 𝐷)
123111, 112, 113, 119, 122lelttrd 11492 . . . . . . . . . . . 12 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (𝑥 − 𝑦) < 𝐷)
124111, 123gtned 11469 . . . . . . . . . . 11 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → 𝐷 ≠ (𝑥 − 𝑦))
12520, 5, 6, 7, 8, 9, 10, 106, 107, 108, 109, 124coe1tmfv2 22621 . . . . . . . . . 10 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)) = 0 )
126125oveq2d 7456 . . . . . . . . 9 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) = (((coe1‘𝐴)‘𝑦) × 0 ))
12745ad2antrr 739 . . . . . . . . . . 11 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (coe1‘𝐴):ℕ0⟶𝐾)
128127, 114ffvelcdmd 7106 . . . . . . . . . 10 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → ((coe1‘𝐴)‘𝑦) ∈ 𝐾)
129106, 128, 81syl2anc 596 . . . . . . . . 9 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (((coe1‘𝐴)‘𝑦) × 0 ) = 0 )
130126, 129eqtrd 2798 . . . . . . . 8 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ (¬ 𝐷 ≤ 𝑥 ∧ 𝑦 ∈ (0...𝑥))) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) = 0 )
131130anassrs 473 . . . . . . 7 ((((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ ¬ 𝐷 ≤ 𝑥) ∧ 𝑦 ∈ (0...𝑥)) → (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))) = 0 )
132131mpteq2dva 5201 . . . . . 6 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ ¬ 𝐷 ≤ 𝑥) → (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)))) = (𝑦 ∈ (0...𝑥) ↦ 0 ))
133132oveq2d 7456 . . . . 5 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ ¬ 𝐷 ≤ 𝑥) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ 0 )))
1341, 22syl 18 . . . . . . 7 (𝜑 → 𝑅 ∈ Mnd)
13520gsumz 19058 . . . . . . 7 ((𝑅 ∈ Mnd ∧ (0...𝑥) ∈ V) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ 0 )) = 0 )
136134, 24, 135sylancl 598 . . . . . 6 (𝜑 → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ 0 )) = 0 )
137136ad2antrr 739 . . . . 5 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ ¬ 𝐷 ≤ 𝑥) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ 0 )) = 0 )
138133, 137eqtrd 2798 . . . 4 (((𝜑 ∧ 𝑥 ∈ ℕ0) ∧ ¬ 𝐷 ≤ 𝑥) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = 0 )
13918, 19, 105, 138ifbothda 4524 . . 3 ((𝜑 ∧ 𝑥 ∈ ℕ0) → (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦))))) = if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 ))
140139mpteq2dva 5201 . 2 (𝜑 → (𝑥 ∈ ℕ0 ↦ (𝑅 Σg (𝑦 ∈ (0...𝑥) ↦ (((coe1‘𝐴)‘𝑦) × ((coe1‘(𝐶 · (𝐷 ↑ 𝑋)))‘(𝑥 − 𝑦)))))) = (𝑥 ∈ ℕ0 ↦ if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 )))
14117, 140eqtrd 2798 1 (𝜑 → (coe1‘(𝐴 ∙ (𝐶 · (𝐷 ↑ 𝑋)))) = (𝑥 ∈ ℕ0 ↦ if(𝐷 ≤ 𝑥, (((coe1‘𝐴)‘(𝑥 − 𝐷)) × 𝐶), 0 )))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  ¬ wn 3   → wi 4   ↔ wb 209   ∧ wa 401   = wceq 1570   ∈ wcel 2147   ≠ wne 2959  Vcvv 3454   ∖ cdif 4048  ifcif 4485  {csn 4588   class class class wbr 5106   ↦ cmpt 5189  ⟶wf 6551  ‘cfv 6555  (class class class)co 7440  ℂcc 11222  ℝcr 11223  0cc0 11224   < clt 11367   ≤ cle 11368   − cmin 11565  ℕ0cn0 12630  ...cfz 13663  Basecbs 17413  .rcmulr 17455   ·𝑠 cvsca 17458  0gc0g 17636   Σg cgsu 17637  Mndcmnd 18949  .gcmg 19303  mulGrpcmgp 20387  Ringcrg 20486  var1cv1 22521  Poly1cpl1 22522  coe1cco1 22523
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7772  ax-cnex 11280  ax-resscn 11281  ax-1cn 11282  ax-icn 11283  ax-addcl 11284  ax-addrcl 11285  ax-mulcl 11286  ax-mulrcl 11287  ax-mulcom 11288  ax-addass 11289  ax-mulass 11290  ax-distr 11291  ax-i2m1 11292  ax-1ne0 11293  ax-1rid 11294  ax-rnegex 11295  ax-rrecex 11296  ax-cnre 11297  ax-pre-lttri 11298  ax-pre-lttrn 11299  ax-pre-ltadd 11300  ax-pre-mulgt0 11301
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-tp 4593  df-op 4839  df-uni 4871  df-int 4911  df-iun 4956  df-iin 4957  df-br 5107  df-opab 5171  df-mpt 5190  df-tr 5216  df-id 5550  df-eprel 5555  df-po 5563  df-so 5564  df-fr 5608  df-se 5609  df-we 5610  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-pred 6319  df-ord 6380  df-on 6381  df-lim 6382  df-suc 6383  df-iota 6509  df-fun 6557  df-fn 6558  df-f 6559  df-f1 6560  df-fo 6561  df-f1o 6562  df-fv 6563  df-isom 6564  df-riota 7397  df-ov 7443  df-oprab 7444  df-mpo 7445  df-of 7714  df-ofr 7715  df-om 7899  df-1st 8022  df-2nd 8023  df-supp 8202  df-frecs 8324  df-wrecs 8355  df-recs 8404  df-rdg 8443  df-1o 8501  df-2o 8502  df-er 8742  df-map 8874  df-pm 8875  df-ixp 8951  df-en 8999  df-dom 9000  df-sdom 9001  df-fin 9002  df-fsupp 9379  df-sup 9458  df-oi 9528  df-card 10044  df-pnf 11369  df-mnf 11370  df-xr 11371  df-ltxr 11372  df-le 11373  df-sub 11567  df-neg 11568  df-nn 12360  df-2 12429  df-3 12430  df-4 12431  df-5 12432  df-6 12433  df-7 12434  df-8 12435  df-9 12436  df-n0 12631  df-z 12718  df-dec 12839  df-uz 12990  df-fz 13664  df-fzo 13813  df-seq 14169  df-hash 14499  df-struct 17351  df-sets 17368  df-slot 17386  df-ndx 17398  df-base 17414  df-ress 17435  df-plusg 17467  df-mulr 17468  df-sca 17470  df-vsca 17471  df-ip 17472  df-tset 17473  df-ple 17474  df-ds 17476  df-hom 17478  df-cco 17479  df-0g 17638  df-gsum 17639  df-prds 17644  df-pws 17646  df-mre 17782  df-mrc 17783  df-acs 17785  df-mgm 18842  df-sgrp 18934  df-mnd 18950  df-mhm 19004  df-submnd 19005  df-grp 19173  df-minusg 19174  df-sbg 19175  df-mulg 19304  df-subg 19359  df-ghm 19454  df-cntz 19558  df-cmn 20023  df-abl 20024  df-mgp 20388  df-rng 20402  df-ur 20435  df-ring 20488  df-subrng 20825  df-subrg 20849  df-lmod 21164  df-lss 21234  df-psr 22244  df-mvr 22245  df-mpl 22246  df-opsr 22248  df-psr1 22525  df-vr1 22526  df-ply1 22527  df-coe1 22528
This theorem is used by:  coe1tmmul2fv  22624  coe1sclmul2  22630
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